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We have provided services to numerous enterprises and ensured meticulous and enthusiastic service!
ABOUT US

Shanghai Haoliu Machinery Equipment Co., Ltd. is a wholly-owned enterprise specializing in the research and development and production of ferrule joints, transition joints, quick couplings, stainless steel pressure reducers, diaphragm valves, stainless steel ball valves, stainless steel needle valves, instrument valve groups, seamless steel pipes and other pipeline connection parts, and providing gas pipeline engineering installation services.

2012
Years
Company Establishment
20
+
Technical Personnel
16
+
Product Series
20000
Factory Building Area
Application
It is widely applied in fields such as petrochemicals, natural gas, metallurgy, analytical instruments, biopharmaceuticals, papermaking, food, shipbuilding, and semiconductors.
Petrochemical Industry
Engineered for extreme conditions - corrosive media, high pressure & superior sealing solutions.

Shanghai Haoliu understands the extreme demands of petrochemical operations for maximum safety and reliability. Our high-pressure tube fittings and valves, manufactured from special-grade stainless steel with unique structural designs and precision machining, deliver exceptional performance under high temperature, high pressure, and highly corrosive conditions.
Analytical Instrument
Precision fittings for analytical equipment - ensuring purity & accuracy in every measurement.

Analytical instrument accuracy heavily depends on fluid delivery system integrity. We supply precision-polished tubing and valves with internal surface roughness controlled to Ra ≤ 0.4μm. Special sealing materials guarantee zero contamination and zero permeation.
Metallurgy
Durable components for harsh metallurgical processes - high temperature & abrasion resistant.

The extreme conditions in metallurgical processes pose severe challenges. We have specially developed product series resistant to high temperatures and abrasion, withstanding operational temperatures up to 800°C. Special surface treatment technologies extend product service life by more than three times.
Natural Gas
Safe & reliable connections for gas transmission - leak-proof performance from LNG to distribution networks.

Safety is paramount in natural gas transmission and processing. Our products hold international certifications including API 6A, offering superior sealing performance and cryogenic toughness, maintaining perfect sealing even in LNG applications as low as -196°C. The unique error-proof design increases installation efficiency by 60% while ensuring first-time connection success.